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Passkeys Object

Properties

backup_stateboolean

Whether the credential is currently synced into a backup (the WebAuthn BS flag). Refreshed on every sign-in.

Example: true
created_atstring · date-time

ISO-8601 UTC timestamp of registration.

Example: 2026-07-01T11:03:20.000Z
device_typestring

multiDevice for a synced passkey (iCloud Keychain, Google Password Manager); singleDevice for a device-bound one (a security key, or a platform authenticator that does not sync).

Example: multiDevice
Possible values:
singleDevicemultiDevicenull
idstring · uuid

The unique ID of the passkey. Use this to rename or delete it.

Example: 1ba1f401-7183-47c5-9e39-e8e257e3c795
last_used_atstring · date-time

ISO-8601 UTC timestamp of the last successful sign-in with this passkey; null if it has never been used.

Example: 2026-07-23T09:12:44.000Z
namestring

User-supplied label, or null when the passkey was registered without one.

Example: MacBook Touch ID